Interesting data point (that may have already been discussed, apologies if so) that's apparent from two different Visa offers on AS website as of today.

The math would seem to indicate (at least in this case) that AS values 1 RDM at $0.01 - equating the 30,000 RDM difference as a $300 statement credit.
As a side note, my experience is that most domestic award pricing is based on a 1.5 cent multiplier (although this may vary based on destination and time of purchase).
A $400 R/T revenue itinerary prices out at 25,000 RDMs, for example.